Background Aspen(Populus tremula) and birch (Betula pubescens) are the fast-growing trees successfully used for the aim of plantation forestry. These species have the great potential in Russia to meeting the need for paper, timber and other wood-based products. However, enhanced growth rate, decreased lignin content and herbicide resistance are the required properties of new trees for plantatio...

Centrosema, Phytoalexins, Isoflavones, Tectorigenin, Aesculetin, Chemotaxonomy A phytoalexin isolated from the fungus-inoculated leaflets of Centrosema haitiense, C. pubescens (3 accessions) and C. virginianum has been identified as 5,7,4'-trihydroxy-6-methoxyisoflavone (tectorigenin). This compound is variously accompanied by other isoflavones includ­ ing the previously described phytoalexin, ...

Meiotic behavior and pollen fertility were analysed in five Epimedium species: Epimedium chlorandrum, Epimedium acuminatum, Epimedium davidii, Epimedium ecalcaratum and Epimedium pubescens. Chromosome numbers for five species were 2n = 2x = 12. All examined species displayed stable meiotic process and high pollen fertility (>76.67%). Meiotic abnormality partially affected pollen fertility. At m...

INTRODUCTION There are population groups nowadays that are regarded as vulnerable, one of which is the prison population, considered to have major health needs. Nonetheless, people deprived of liberty maintain inherent human rights such as that of health care, which in some situations may take second place. METHODS Cross-sectional descriptive study, carried out at El Manzano Prison compliance...

In this article we present a non-linear dynamic programming algorithm for the computation of forward rates within the maximum smoothness framework. The algorithm implements the forward rate positivity constraint for a one-parametric family of smoothness measures and it handles price spreads in the constraining dataset. We investigate the outcome of the algorithm using the Swedish Bond market sh...

Fluctuating asymmetry (FA) represents small, non-directional deviations from perfect symmetry in morphological characters. FA is generally assumed to increase in response to stress; therefore, FA is frequently used in ecological studies as an index of environmental or genetic stress experienced by an organism. The values of FA are usually small, and therefore the reliable detection of FA requir...

Seven samples of halophyte plants (Bassia hirsuta Aschers, Euphorbia peplis L., Salicornia europeae L., Calystegia soldanella, Calystegia sepium, Stachys maritima Gonan and Suaeda maritima Dumort,) were collected from a sand bar near the town of Pomorie (Bulgaria). The soil salinity ranged between 650 and 850 mg salts in 100 g soil. For comparison, two other samples from the species Calistegia ...

BACKGROUND AND AIMS Evolutionary transitions from heterostyly to dioecy have been proposed in several angiosperm families, particularly in Rubiaceae. These transitions involve the spread of male and female sterility mutations resulting in modifications to the gender of ancestral hermaphrodites. Despite sustained interest in the gender strategies of plants, the structural and developmental bases...